Geochemical Dataset for Polymetallic Nodule B167 from the Northwestern Pacific

This dataset contains EPMA major-element and LA-ICP-MS trace-element data from 184 analytical positions across two rim-to-rim transects of polymetallic nodule B167 from the northwestern Pacific. The EPMA file reports oxide concentrations and structural zones in wt%, whereas the LA-ICP-MS file contains concentrations of 36 trace elements in ppm. Samples are ordered from B167-1 to B167-184, allowing point-by-point comparison between the two datasets. These data document geochemical variations across four concentric growth zones and support analyses of critical-metal partitioning and nodule growth processes.本数据集涵盖取自西北太平洋多金属结核B167的两条完整横穿剖面的184个分析点位数据，包含电子探针显微分析（EPMA）主量元素数据与激光剥蚀电感耦合等离子体质谱（LA-ICP-MS）微量元素数据。其中EPMA文件以重量百分比（wt%）形式报告氧化物浓度与结构带信息，LA-ICP-MS文件则包含36种微量元素的百万分比浓度（ppm）数据。所有样本按B167-1至B167-184的顺序排列，可实现两套数据集的逐点位比对。本数据集记录了该结核四个同心生长带的地球化学变化特征，可为关键金属分配机制及结核生长过程的相关分析提供支撑。